This little cable will enable you to convert Apple iPhone headphone jack to 3.5mm jack.

It is a super choice if you prefer using your own headphone with easy answering the call with the builtin microphone using the switch. Convenient, easy.

It has built-in clip as well, so you can attach the cable to your sleeve, coin pocket etc.

Apple iPhone Stereo 3.5mm Audio Converter with microphone

USB cable has both hotsync and charging capability for Apple iPod and iPhone 3G.

Up to 400 Mbps rate is quite good for music and data transfer. The cord is 5.75 ft. long. No complaints about the locking mechanism as well.

Why to spend a data cable more than $5? This data cable is around $2 at Amazon and highly rated by its quality.

NEW FOR IPHONE 3G 2ND BLACK USB DATA CABLE WIRE CORD

This is the best and official iphone cable from Apple. There are surely other very cheap dock connectors but this is the winner with the high quality and no problems.

If you have money to spend don't hesitate to buy this from Apple.

If not, I can suggest Inspiretech iPhone portable USB dock connector with its super cheap price and positive customer comments.

Buy Apple iPod® Dock Connector to USB Cable here

Although Belkin cables for iPhone are my favorites, this cable from DLO company is also high quality and affordable.

You can connect an audio device to your car stereo home stereo-any aux-in port. It was customized to fit iPhone 4' shielded flexible cable.

Suitable for both iPhone models. DLO 3.5mm-To-3.5mm AUX-In Cable For iPhone And iPhone 3G is sold with 55% savings at Amazon

You can update your iPod and iPhone at high speed with the latest music and data with this retractable USB Hotsync Cable. There is no cable mess.

NEW Retractable Black USB Cable Cord for iPhone 3G

Compatible With: Apple iPhone, iPod 3G, iPod 4G / Photo (U2 Special Edition), iPod Classic, iPod Mini, iPod Nano, iPod Nano (2nd Generation), iPod Nano (3rd Generation), iPod Photo, iPod Photo (U2), iPod Touch, iPod Video 30 GB / U2, iPod Video 60 / 80GB, iPod Video 60 GB / 80 GB, Apple iPod Touch 2nd Generation